运输问题的数学模型及其特征，运输问题的求解方法（表上作业法），运输模型的进一步讨论，运输模型对偶问题分析。
The transportation models and its characters, the Transportation Simplex Method, Further discussions about the transportation models, analysis on the dual transportation problems.
分析了城市轨道交通票价体系的现状及存在的问题，总结了一体化公交运输系统的特征。
The key of developing an integrated public transport system is to improve the fare system of UMT in big cities.
分析了城市轨道交通票价体系的现状及存在的问题，总结了一体化公交运输系统的特征。
The key of developing an integrated public transport system is to improve the fare system of UMT in big cities.
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